<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <script src="./src/react.js"></script>
    <script src="./src/react-dom.js"></script>
    <script src="./src/babel.js"></script>
</head>

<body>
    <div id="app"></div>
</body>
<script type="text/babel">
    // 受控组件：表单的 【初始值-值的变化】 都是由 state 控制 

    class Biaodan extends React.Component{
       constructor(){
           super();
          this.state={
              falg:false,
              user:'admin',
              password:123456
          }
       }
       ChangeUser=(event)=>{
        console.log(event);
        this.setState({
            user:event.target.value
        })
        console.log(this.state.user);
       }
       ChangePassword=(event)=>{
        console.log(event);
        this.setState({
            password:event.target.value
        })
        console.log(this.state.password);
       }
       add=()=>{
           console.log(this.state);
       }
       changeinp=(event)=>{
        const value=event.target.type=='checkbox'?event.target.checked:event.target.value
           this.setState({
              
               [event.target.name]:value
           })
         
       }
       render(){
           let {user,password,falg} = this.state
           return (
            <div>
            {/* <input type="text" name="user" value={user} onChange={(e)=>this.ChangeUser(e)}/>
            <input type="text" name="" id="" value={password} onChange={this.ChangePassword}/>*/} 
           <input type="text" name="user" value={user} onChange={(e)=>this.changeinp}/>
            <input type="text" name="" id="" value={password} onChange={this.changeinp}/>
            <input type="checkbox" checked={falg} name="falg" id="" onChange={this.changeinp} />
            <input type="button" value="提交" onClick={this.add}/></div>
           
           )
       }
    }  

       ReactDOM.render(
           <div>
               <Biaodan></Biaodan>
           </div>,
           document.getElementById("app")
       )
       
   </script>

</html>